alumina extraction problem. in the standard bayer process for refining bauxite to produce alumina the dissolution of the alumina in the ore to form sodium aluminate is accomplished in autoclaves under high pressures varying from 70 to 200 pounds per square inch.
the bayer process was invented and patented in 1887 by austrian scientist karl josef bayer. two to three tonnes of bauxite are required to produce one tonne of alumina. 90% of the global alumina supply of around 90 million tonnes is used in aluminium production.
the bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by carl josef bayer. bauxite the most important ore of aluminium contains only 30–60% aluminium oxide (al 2 o 3) the rest being a mixture of silica various iron oxides and titanium dioxide.
this is a marketing gimmick to appeal to environmentalists by reynolds because more then 75% of aluminum in the us is currently recycled because the process of processing bauxite ore into aluminum uses hideous amounts of electricity.
miner: this one actually bears exploring. get that ore out of the ground 50% faster and you'll get it sold or refined into jewelry faster. since mining can generate a ton of money this may end up being a good choice. your commies will like you because iron and bauxite are material exports.
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processing of bauxite ores to obtain aluminum bauxite the primary aluminum ore uses the bayer process to extract alumina from the ore. the processing begins with crushing to 1-2 inch particles and wet screening to remove some silica fines which are generally present with bauxite.